Mapping project from the New York Times

The New York Times has an interactive "mapping project" that is very informative.  Click here.  The project allows one to generate maps to investigate things like race and ethnicity, income, housing and families, and education.  Below (click to enlarge)  is a "median income" map of the Jackson, MS area.  The data for the maps is from the Bureau of the Census' American Community Survey.  Kudos New York Times.